Window-sash lock



J. O. MEERBOTT wINnow sAsH| LOCK Filed Feb. 24, 1925 INVENTOR I- Joseph jleerlw;

Patented Oct. 13, 1925.

4UNITED STATES JOSEPH O. MEERBOTT, F JERSEY CITY, NEW JERSEY.

WINDOW -SASH LOCK.

Application med February`24, 1925. serial No. 11,187.

To' all whom it may concern Be it known that I, JOSEPH O. Mnnnno'r'r,

"a citizen ot the United States, and a resident of Jersey City, in the county ot Hud- `son and State of New Jersey, have invented a new and Improved VVindow-Sash Lock, of which the following is a full, clear, and eX- act description.

My invention relates to window sashlocks and aims to provide a lock of very rugged `and strong, yet simple and inexpensive, construction adapted to lock the sashes of a Window in closed position and in such manner as to prevent the lock from lbeing unlocked or otherwise manipulated from thc outside of the window.

In sash locks as heretofore constructed, co-acting members are provided which are respectively atlixed to the two sashes ot the window. It is an object of my invention to provide instead, a single self-contained device adapted to be permanently secured to ,one of the window sashes only which re Qquires no co-operating member to be perma- .fnently secured to the other of the sashes.

Another object of my invention is to provide a lock which may be easily locked and Iunlocked and which, when in unlocked position, may be so folded as to be inconspicu 30 -.ous and occupy a position which will not interfere with the movement of the sashes.

lith these and other objects in view, my invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in :the claims.

Referring to the drawings;V

Figure 1 is a perspective View of a 'fragment ot two window sashes with my improved lock applied thereto, showing the manner in which the sashes are locked together;

Fig. 2 is a view in section taken on line 22 of Fig. 1;

Fig. 3 is a sectional View similar to Fig. 2, but with my lock in unlocked and folded position; and

Fig. 4 is a perspective view oit' a slightly modied form of my lock detached from a window sash.

In the drawings I have used the numeral to designate the lower transverse frame member of the upper sash of a window, while the numeral 11 designates the upper transverse trame member of the lower sash formed' with an outwardly directed flange,

17 while the tree end of plate 14 is provided with an inwardly'y directed fiange 18, or,

in other words, when my lock is in locking position as shownv in Fig. 2, the iiange 18 projects toward plate 12, while flange 17 projects away from plate 14. The edge of flange' 18 is formed with an upwardly projecting tooth 19, as clearly shown in Figs. 2 and 4. The plate 10 is formed with one or more countersunk screw holes 2O to receive screws 21 by which plate 12 is secured to the inner face of the sash frame member 10.

In applying the lock to-the window sash, the trame member 10 is recessed or mortised to receive the plate 12 so that the inner tace ot the latter` will lie Hush with the inner :tace of the frame member 10. The flange 17 is hooked under the lower edge of the frame member' 10 and thereby a very lirm attachment of plate 12 to member 10 is obtained. The length of plate 12 is preterably such'that the hinge 15 will rest on the top of the frame member 10 when the flange 17 is hooked under the lower edge of the frame member 10. In order to lock the win'- dow, the plates 13 and 14 are folded over the top and inner face of frame member 11,

with flange 18 extending under the lower` inside edge of member 11 and tooth 19 projecting upward into the lower tace of frame member 11. and plate 14. are preferably so chosen that the hinge 16 falls just beyond the upper inner corner of the frame member 11, this permits plate 13 to lie horizontally on the top of member 11 and plate 14 to lie vertically against the inner face of member 11. l/Vhen so applied, the lock makes a very firm fastening of the two sashes which will resist etlorts to open the window. In fact, it will be impossible to open the window without breaking the hinges 15 or 16 or tearing the window sash frame members 10 or 11. Because the center of hinge 16 lies just beyond the inner faceV of member 11, the tooth 19 may be moved into engagement The dimensions of plate 13 having a vertical joint between the with the bottom face of member l1 without. marring the lower inner corner of said member. IVhen it is desired to unlock the win= dow, it is merely necessary first to'swing the plate 14 back on its hinge 16 and fold it over on plate 13; after which the plate is raisedto the position shown in Fig. 8. I n other words, the hinge 16 rests against the glass ofthe upper sash.

In my drawings, I have sho-wn a form of window in which the adjacent faces of the frame members 1() and 11 are inclined. It will be apparent that my locking device will operate equally as well with window sashes frame members of the respective sashes. In the latter case, the flange 17 stands at right angles to the plate 12Vas shown in Fig. 4, instead of at an acute angle as shown in Figs. 2 and 3. Of course it is desirable to adapt the dimensions of my lock to the dimensions of the window sash members.

Although I have shown my lock with the arts 13 and 14 hinged together, it will be evident that the two members could be integral or rigidly joined, but in such case the lock could be used only on a window in which the depth of the member 1() from the inner upper corner to the glass pane is sufficient to permit flange 18 to clear member 11 when the lock is swung up against the glass to inoperative position.

From the foregoing description, it will be seen that simple and eilicient means are herein provided for accomplishing the objects of the invention, but while the elements shown and described are well adapted to serve the purposes for which they are intended, it is to be understood that the invention is not limited to the precise construction set forth, but includes within` its purview such changes as maybe made within the scope of the appended claims.

I claim: n

1. In a device for locking two window sashes together, a. plate, means for securing said plate to the inner 'face of aframegmember of one of said sashes, a flange at the lower end of said plate adapted to bear against the bottom of said member, and an aiticulated hook hinged to the upper end of said plate, said hook being adapted to overlap the topl of a frame member of the other of said sashes and hook under the edge of said last named member.

2. A sash lock comprising an L-shaped plate adapted to engage the bottom and inner face of a frame member of a window sash, and asecond lL-shaped member adapted to engage the bottom and inner face of a frame member of a second window sash, and a connecting link having hinged connection with said plates and adapted to lie across the top of said last mentioned member.

8. A sash lock comprising a link, an attachment plate hinged to one end thereof, and a hook plate hinged to the other end thereof, the attachment plate being adapted to bel secured to one of a pair of window sashes and the hook plate being adapted to be brought into hooked engagement with the other of the pair of sashes,

l. A. sash lock comprising a link plate, an attachment plate hinged to one end thereof, a hook plate hinged to the other end thereof, the .free end of the attachment plate being formed with an outwardly projecting flange, and the free end of the hook plate being formed with an inwardly projecting flange.

5. A sash lock comprising a link plate, an attachment plate hinged to one end thereof,

a hook plate hinged to the other end thereof,

the free end of the attachment plate being formed with an outwardly projecting flange, and the free end of the hook plate being formed with an inwardly projecting flange, the attachment plate being formed for attachment to one of a pair of' window sashes, and the flange of the hook plate being formed with a toot-h adapted to engage the other of a pair of sashes.

6. A sash fastener comprising a. plate formed for attachment tothe inner face of the bottom rail of an upper sash and an articulated hook hinged to the upper end of said plate, said hook being formed to overlie the top rail of a lower sash and hook under the inner edge of said top rail.

JOSEPH O. MEERBOTT. 

